Field soil dyeing tracing method and system

Abstract

The invention provides a field soil dyeing tracing method and system.The method comprises the following steps that soil in a target area is dyed, a dyed area is obtained, and an excavation area is determined in the dyed area; a soil profile is excavated in the excavation area, dyeing form data and three-dimensional model data of the soil profile are obtained, and the soil profile comprises a horizontal profile and a vertical profile; integrating the dyeing form data of the soil profile and the three-dimensional model data, and distinguishing soil particles and pores in the soil profile; obtaining a moving path of the dyeing solution in the soil of the excavation area; according to the field soil dyeing tracing method and system, the dyeing form data and the three-dimensional model data of the horizontal section and the vertical section are obtained at the same time in a group of excavated pits, the pit excavation operation process is reduced, and manpower, material resources and time are saved; meanwhile, the solution migration path can be accurately positioned, and more accurate and comprehensive data support is provided for soil related research.

Description

Technical Field

[0001] This invention relates to the field of soil staining and tracing technology, and more specifically, to a method and system for field soil staining and tracing. Background Technology

[0002] Traditional experimental methods have many limitations in field soil staining and tracing experiments.

[0003] For example, on the one hand, when excavating soil profiles, it is necessary to excavate horizontal and vertical profiles in different areas, which is a complicated process that consumes a lot of manpower, material resources and time. Moreover, the data continuity may be poor due to environmental differences and other factors during the excavation of different profiles. On the other hand, in the image processing stage after staining and tracing, the location of pores is generally inferred by relying only on the watershed method in image analysis. Since the images of soil and pores are similar, it is impossible to accurately distinguish between soil particles and pores. This makes the location less accurate when studying the transport path of solution in soil, which affects the in-depth study of the transport laws of water and solute in soil. Summary of the Invention

[0004] The purpose of this invention is to provide a method and system for field soil staining and tracing to solve the problems mentioned in the background art.

[0005] In a first aspect, the present invention provides a method for soil staining and tracing in the field, comprising the following steps: S1. Dye the soil in the target area to obtain the dyed area, and determine the excavation area within the dyed area; S2. Excavate a soil profile within the excavation area and obtain the staining morphology data and three-dimensional model data of the soil profile, wherein the soil profile includes a horizontal profile and a vertical profile. S3. Integrate the staining morphology data and the three-dimensional model data of the soil profile to distinguish soil particles and pores in the soil profile; S4. Obtain the movement path of the dyeing solution within the soil of the excavated area.

[0006] In the field soil staining tracing method of the present invention, staining morphology data and three-dimensional model data of horizontal and vertical profiles are acquired simultaneously in a set of excavated pits, reducing the pit excavation operation process and saving manpower, material resources and time. At the same time, since the staining morphology data and three-dimensional model data of horizontal and vertical profiles are acquired, the location information of each set of horizontal and vertical profiles and pores can be accurately determined by using the three-dimensional scanning model data. Combined with the image information in the staining morphology data, the overall data has good coherence and can accurately locate the solution migration path, providing more accurate and comprehensive data support for soil-related research.

[0007] Based on this, the field soil staining tracing method of the present invention can be further improved and extended as follows: Further, in step S1, the dyed area and the excavated area are obtained within the target area using a double-ring infiltration method, the double-ring infiltration method comprising: An outer ring and an inner ring concentric with the outer ring are inserted into the soil within the target area, wherein the dyed area is enclosed by the outer ring and the excavated area is located within the inner ring.

[0008] The outer ring serves to form an isolation buffer zone, constraining lateral seepage within the soil, while the inner ring provides an environment for soil profile excavation.

[0009] Furthermore, prior to step S1, the following preparatory steps are also included: Select the target area location; Clean up debris in the target area to reduce interference with the tracing process.

[0010] Furthermore, in step S2, the soil profile is excavated downwards sequentially, with the excavation depth of the soil profile being equal each time, and the staining morphology data and the three-dimensional model data are obtained after each excavation.

[0011] Furthermore, the depth of a single excavation of the soil profile ranges from 1 cm to 10 cm.

[0012] Furthermore, the time interval between the excavation of the soil profile and the soil staining is not less than 24 hours, so that the staining solution has enough time to simulate the solution transport path in the soil.

[0013] Furthermore, when the outer ring has a size of 80cm*80cm and the inner ring has a size of 60cm*60cm, the depth to which the outer ring and the inner ring are inserted into the soil is 30cm.

[0014] Secondly, the present invention also provides a field soil staining tracing system for implementing the aforementioned field soil staining tracing method, the system comprising a dual-ring assembly, a staining assembly, a camera, and a three-dimensional scanner. The dual-ring assembly includes the outer ring and the inner ring; The dyeing assembly is used to spray the dyeing solution onto the soil within the dyeing area; The camera is used to capture photographs of the staining morphology data of the soil profile; The 3D scanner is used to acquire the 3D model data of the soil profile.

[0015] Based on this, the field soil staining tracing system of the present invention can be further improved and extended as follows: Furthermore, the dyeing assembly includes a liquid source and a nozzle; The liquid source is used to provide the staining solution; The nozzle is located above the center of the inner ring and is connected to the liquid source to uniformly spray the dyeing solution into the dyeing area.

[0016] Furthermore, both the outer ring and the inner ring are rectangular rings to accommodate the shape and outline of the excavated pit on site. Attached Figure Description

[0017] Figure 1 A flowchart of the field soil staining and tracing method provided in the embodiments of the present invention; Figure 2 A plan view of the field soil staining tracing system provided in an embodiment of the present invention; Figure 3 A three-dimensional rendering of the field soil staining tracing system provided in an embodiment of the present invention; Figure 4 A schematic diagram of staining morphology data of a set of horizontal cross sections provided for an embodiment of the present invention; The attached diagram lists the components represented by each number as follows: 1-Double ring assembly, 10-Outer ring, 11-Inner ring, 12-Bracket, 120-Mounting position, 2-Dyeing assembly, 20-Liquid source, 21-Nozzle, a-Horizontal profile, b-Core dyeing area, c-Ground. Detailed Implementation

[0018] The principles and features of the present invention are described below. The examples given are only for explaining the present invention and are not intended to limit the scope of the present invention.

[0019] This invention provides a method and system for soil staining and tracing in the field.

[0020] Among them, reference Figure 1 The field soil staining tracing method includes the following steps: S1. Dye the soil in the target area to obtain the dyed area, and determine the excavation area within the dyed area. S2. Excavate a soil profile within the excavation area and obtain the staining morphology data and three-dimensional model data of the soil profile. The soil profile includes horizontal and vertical profiles. S3. Integrate soil profile staining morphology data and 3D model data to distinguish soil particles and pores in the soil profile. S4. Obtain the movement path of the dyeing solution within the soil of the excavated area.

[0021] In step S1, soil staining is achieved by spraying a staining solution, such as brilliant blue or ionic dye, onto the ground in the target area, allowing the staining solution to naturally seep into the soil.

[0022] In step S2, the staining morphology data of the horizontal and vertical profiles of the soil and the three-dimensional model data are obtained from a group of pits excavated in the excavation area.

[0023] In this invention, soil profile staining morphology data and three-dimensional model data can be acquired using electronic devices such as cameras and three-dimensional scanners.

[0024] Generally, the purpose of horizontal profile sampling is to assess the pollution status or fertility level of shallow soil and evaluate the overall characteristics of the soil area, while the purpose of vertical profile sampling is to systematically collect soil samples at different depths to reveal the deep characteristics and evolution of the soil. Given that the two research purposes are different, in the relevant existing technologies, the sampling data of horizontal profiles and vertical profiles are obtained in different pits.

[0025] In the field soil staining tracing method of the present invention, sampling data of horizontal and vertical profiles are obtained simultaneously in a group of pits, realizing the merging of horizontal and vertical profile excavation, which can reduce the pit excavation operation process and save manpower, material resources and time.

[0026] Meanwhile, the sampling data includes staining morphology data of horizontal and vertical profiles and three-dimensional model data. The staining morphology data can display the staining image information of the relevant profile, while the three-dimensional model data contains dense point cloud data of the relevant profile. Based on the additional attributes such as coordinates, color, and reflection intensity in the point cloud data, the soil and pores on the relevant profile can be accurately identified. By comparing, processing and combining the staining morphology data and the three-dimensional model data, the soil and pores on the profile can be accurately distinguished.

[0027] At the same time, combining the staining image information with the location information recorded in the three-dimensional model data can improve the coherence of the overall data and avoid sample information interference or confusion caused by collecting horizontal and vertical profile samples in the same set of pits.

[0028] The field soil staining tracing method of the present invention can accurately locate the migration path of the staining solution in the soil, providing more accurate and comprehensive data support for soil-related research.

[0029] In the field soil staining tracing method of the present invention, the selection of the target area should follow the principle of avoiding areas of human interference, and usually a flat area is selected as the target area.

[0030] In some embodiments, when the selected target area contains a lot of debris such as stones, fallen leaves and dead branches, the debris in the target area should be cleaned up before dyeing the target area to reduce interference with the dyeing and tracing process.

[0031] For staining the target area, the staining solution is usually sprayed evenly directly onto the target area to form the stained area.

[0032] Reference Figure 3 In step S2, during the soil excavation process in the excavation area, the soil profile should be excavated downwards one by one, and the excavation depth of each soil profile should be equal. After each excavation, the color morphology data of the horizontal profile and the vertical profile and the three-dimensional model data should be obtained. The horizontal profile refers to the plane where the bottom of the pit is located after each excavation, and the vertical profile refers to the side of the pit.

[0033] Generally, in existing technologies, the interlayer spacing between adjacent horizontal profiles is usually 10cm when sampling soil profiles. However, in this embodiment of the invention, since the combination of staining morphology data and three-dimensional model data can greatly improve the accuracy of sample information, the single excavation depth of the soil profile is 1cm to 10cm, that is, the interlayer spacing between adjacent horizontal profiles can be selected between 1cm and 10cm, which can greatly reduce the amount of excavation work.

[0034] Generally, the time interval between the excavation time of the soil profile in step S2 and the soil staining time in step S1 should be no less than 24 hours, so that the staining solution has enough time to simulate the solution transport path in the soil.

[0035] In some embodiments, during step S1, a double-ring infiltration method can also be used to determine the dyed area and the excavated area of ​​the target region; specifically, referring to... Figure 3 An outer ring 10 and an inner ring 11 concentric with the outer ring 10 are inserted into the soil within the target area. The dyeing area is enclosed by the outer ring 10, while the excavation area is located within the inner ring 11.

[0036] The outer ring 10 serves to form an isolation buffer zone within the soil, restricting the lateral seepage of the dyeing solution into the soil. The inner ring 11 serves to provide an environment for excavating the soil profile, allowing the dyeing solution to infiltrate the soil from top to bottom within the excavation area enclosed by the inner ring 11.

[0037] For example, refer to Figure 2 and Figure 3In one specific embodiment, when the double-ring infiltration method is used to stain and trace the soil, the outer ring 10 has an outline dimension of 80cm*80cm*50cm, and the inner ring 11 has an outline dimension of 60cm*60cm*50cm. The outer ring 10 and the inner ring 11 are inserted into the soil to a depth of 30cm, that is, the outer ring 10 and the inner ring 11 are both 20cm above the ground surface c. At this time, the excavation area is mainly the core staining area b located in the inner ring 11.

[0038] Among them, reference Figure 4 The diagram shows the staining morphology data of a horizontal soil profile b at a certain depth after excavation. The dark areas in the diagram represent stained areas, and the white areas represent unstained areas. The soil and stained pores in the diagram are difficult to distinguish visually, but they can be accurately distinguished by combining the dense point cloud provided by the 3D model data.

[0039] The field soil staining tracing system provided by the present invention uses a double-ring infiltration method to achieve the aforementioned field soil staining tracing.

[0040] Reference Figure 2 and Figure 3 The field soil staining tracing system of the present invention includes a dual-ring component 1, a staining component 2, a camera, and a three-dimensional scanner.

[0041] The double-ring component 1 includes an outer ring 10 and an inner ring 11, both of which are rectangular rings to accommodate the shape and outline of the excavated pit on site.

[0042] The dyeing component 2 is used to spray dyeing solution onto the soil in the dyeing area. The dyeing component 2 includes a liquid source 20 and a nozzle 21. The liquid source 20 is used to provide dyeing solution. The nozzle 21 is located above the middle of the inner ring 11. The nozzle 21 is connected to the liquid source 20 through a hose and a metering pump to uniformly spray dyeing solution onto the dyeing area.

[0043] A camera is used to take photos of soil profile staining morphology data, and a 3D scanner is used to acquire 3D model data of the soil profile. Some electronic devices on the market have integrated 3D scanning modules and camera modules. Therefore, a camera and a 3D scanner can be two separate devices or a single device with the above functions.

[0044] Reference Figure 2 and Figure 3 A bracket 12 is installed above the inner ring 11. The center of the bracket 12 is the mounting position 120. The nozzle 21 is installed in the mounting position 120 and can spray evenly to the surrounding dyeing area.

[0045] In addition, in some embodiments, the nozzle 21 is detachably installed on the mounting position 120, and the nozzle 21 can be removed from the mounting position 120 after the spraying operation is completed; a camera and a 3D scanner are installed on the mounting position 120 for taking pictures and scanning samples.

[0046] It is easy to understand that, in order to make the photographic and scanning sampling of the horizontal and vertical soil profiles more accurate and sufficient, sometimes it is necessary to insert the aforementioned cameras and 3D scanners into the soil pit by hand or other means to collect samples.

[0047] Therefore, in some embodiments, a set of vertical guide rails (not shown) can be extended downward from the middle of the bracket 12, and the mounting position 120 can be slidably and rotatably mounted on the guide rails to facilitate the insertion of the camera and 3D scanner for sampling.

[0048] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0049] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0050] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A field soil staining and tracing method, characterized in that, Includes the following steps: S1. Dye the soil in the target area to obtain the dyed area, and determine the excavation area within the dyed area; S2. Excavate a soil profile within the excavation area and obtain the staining morphology data and three-dimensional model data of the soil profile, wherein the soil profile includes a horizontal profile and a vertical profile. S3. Integrate the staining morphology data and the three-dimensional model data of the soil profile to distinguish soil particles and pores in the soil profile; S4. Obtain the movement path of the dyeing solution within the soil of the excavated area.

2. The field soil staining tracing method according to claim 1, characterized in that, In step S1, the staining area and the excavation area are obtained within the target area using a double-ring infiltration method, the double-ring infiltration method comprising: An outer ring and an inner ring concentric with the outer ring are inserted into the soil within the target area, wherein the dyed area is enclosed by the outer ring and the excavated area is located within the inner ring.

3. The field soil staining tracing method according to claim 2, characterized in that, Before step S1, the following preliminary steps are also included: Select the target area location; Clean up the debris in the target area.

4. The field soil staining tracing method according to claim 2, characterized in that, Step S2 specifically includes excavating the soil profile downwards one by one, with the excavation depth of the soil profile being equal each time, and obtaining the staining morphology data and the three-dimensional model data after each excavation.

5. The field soil staining and tracing method according to claim 4, characterized in that, The depth of a single excavation of the soil profile ranges from 1 cm to 10 cm.

6. The field soil staining tracing method according to claim 2, characterized in that, The time interval between the excavation of the soil profile and the soil staining is no less than 24 hours.

7. The field soil staining tracing method according to claim 2, characterized in that, When the outer ring is 80cm*80cm and the inner ring is 60cm*60cm, the depth to which the outer ring and the inner ring are inserted into the soil is 30cm.

8. A field soil staining tracing system, characterized in that, The system is used to implement the field soil staining and tracing method according to any one of claims 2 to 7, characterized in that the system includes a dual-ring component, a staining component, a camera, and a three-dimensional scanner. The dual-ring assembly includes the outer ring and the inner ring; The dyeing assembly is used to spray the dyeing solution onto the soil within the dyeing area; The camera is used to capture photographs of the staining morphology data of the soil profile; The 3D scanner is used to acquire the 3D model data of the soil profile.

9. The field soil staining tracing system according to claim 8, characterized in that, The dyeing assembly includes a liquid source and a nozzle; The liquid source is used to provide the staining solution; The nozzle is located above the center of the inner ring and is connected to the liquid source to uniformly spray the dyeing solution into the dyeing area.

10. The field soil staining tracing system according to claim 8, characterized in that, Both the outer ring and the inner ring are rectangular rings.

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